The U.S. State Department updated its security warning for Russia shortly after the Opening Ceremonies for the 2014 Olympics began in Sochi Friday. “The Department of State alerts U.S. citizens planning to attend the 2014 Olympic Games in Russia that they should remain attentive regarding their personal security at all times.” It also issued special warnings about cybersecurity and hotel shortages in its press release.

“U.S. travelers should be aware of cyber security threats and understand that they have no expectation of privacy when sharing sensitive or personal information utilizing Russian electronic communication networks,” the alert said.

Regarding hotel rooms, it said: “There may be shortages of hotel rooms during the Olympics. Some hotels are still under construction, and there are reports that some rooms booked in advance have not been available upon arrival. Advertised rates for standard rooms are currently $300-1,000 per night.”